Industrial Pulleys & Sheaves
Power transmission drive components — cast iron, ductile iron, steel and aluminum sheaves for V-belt and wire rope drives.
Built to your drawing, to your standard
The pulley is one of the most fundamental power transmission components in mechanical engineering. Groove profile, material, balancing grade and bore configuration all work together to create a sheave that runs true at speed and transmits torque without slip.
At MACHINING Force, our pulley manufacturing combines traditional foundry expertise with CNC precision machining to produce sheaves that meet or exceed OEM originals. We cover standard V-belt sections (3V, 5V, 8V, A, B, C, D, SPZ, SPA, SPB, SPC) with precision-machined groove profiles for optimal belt engagement — from fractional-horsepower single-groove pulleys to large multi-groove industrial sheaves exceeding 2 meters in diameter.
- Cast iron GG25/GG30, ductile GGG50, steel C45, aluminum 6061-T6
- Classical A–E & wedge SPZ/SPA/SPB/SPC, 3V/5V/8V
- OD 50 mm – 2,500 mm (2" – 98")
- Pilot, finished, taper lock, QD bushing or keyway bores
- 1 to 12 grooves per pulley
- Static and dynamic balance G6.3 / G2.5
Why engineers specify Force Machining
Cast iron GG25/GG30, ductile GGG50, steel C45, aluminum 6061
T6
Classical A
E & wedge SPZ/SPA/SPB/SPC, 3V/5V/8V
OD 50 mm
2,500 mm (2" : 98")
Pilot, finished, taper lock,
Engineered and verified in-house so field performance matches drawing intent.
1 to 12 grooves
Engineered and verified in-house so field performance matches drawing intent.
Static and dynamic balance
Engineered and verified in-house so field performance matches drawing intent.
Typical technical envelope
Full material grades, dimensional envelope, load capacity and finish options are listed on the dedicated specifications page.
Where these parts perform
- Industrial fan & blower drives
- Compressor & pump belt drives
- Conveyor head & tail pulleys
- Crusher & grinder drives
- Agricultural harvesters & balers
- Crane hoist & winch sheaves
- Paper mill & textile machinery
- HVAC air handling units
Headline performance figures
Certified metallurgy at every heat
Every bar and blank arrives with a mill certificate. We match material grade to service duty — from general-purpose carbon steel to corrosion-resistant stainless and high-fatigue alloys.
Cast iron GG25/GG30
Sourced from certified mills with EN 10204 3.1 material certificates on request.
ductile iron GGG50
Sourced from certified mills with EN 10204 3.1 material certificates on request.
steel C45
Sourced from certified mills with EN 10204 3.1 material certificates on request.
aluminum 6061-T6
Sourced from certified mills with EN 10204 3.1 material certificates on request.
From drawing to inspected part
Engineering & DFM Review
Our application engineers review your 2D drawing or 3D STEP model, run a design-for-manufacture study, and recommend material grade, heat treatment and surface finish to meet the specified duty cycle at the lowest landed cost.
Precision Manufacturing
CNC turning, 3–5 axis milling, cylindrical and internal grinding, gear hobbing, induction and case hardening — all performed in-house on calibrated equipment under IATF 16949-aligned process control.
Quality Verification
Statistical process control on critical dimensions, first-article (FAI/PPAP) approval, CMM traceable measurement, Rockwell/Brinell hardness mapping and Ra surface-roughness verification per ISO 9001:2015.
Preservation & Dispatch
VCI oil, desiccant sachet and heat-sealed PE for corrosion protection; ISPM-15 fumigation-free plywood cases; barcode labelling and pre-cleared export documentation for door-to-door delivery.
Trusted across demanding sectors
Our parts run inside gearboxes, drivelines and finished machinery for OEMs in a dozen industries — supported by full traceability and consistent global delivery.
Six layers of verification
Every batch passes chemistry, dimension, hardness, balance, finish and NDT gates before it leaves the plant.
Material Certification (EN 10204 3.1)
Every heat is verified by optical emission spectrometry against the ordered grade. Certified mill test reports (MTC) accompany each shipment and are archived for ten years for full lot-to-lot traceability.
Dimensional Inspection (CMM & FAI)
Zeiss and Mitutoyo coordinate measuring machines verify GD&T callouts to ISO 1101. First-article inspection (FAI) and PPAP Level 3 packages are issued for automotive and safety-critical parts on request.
Hardness & Metallurgical Analysis
Rockwell (HRC), Brinell (HB) and micro-Vickers hardness maps confirm case depth and core properties. Metallographic sections are examined at 100–500× for grain size, phase distribution and inclusion rating.
Dynamic Balancing (ISO 1940)
Rotating components — pulleys, sheaves and gears above 1,800 RPM — are dynamic-balanced to G6.3 as standard, with G2.5 available for high-speed drives. Residual unbalance is reported in g·mm per plane.
Surface Finish & Coating Verification
Contact and non-contact Ra/Rz measurement, coating thickness by magnetic and eddy-current gauge, adhesion by cross-cut, and 500–1,000 h salt-spray corrosion testing per ASTM B117 on plated and painted parts.
Non-Destructive Testing (NDT)
Magnetic particle (MPI), liquid dye penetrant (LPI) and ultrasonic (UT) inspection by ASNT Level II operators. Radiographic (RT) inspection subcontracted to accredited third-party labs when required.
Export-grade packaging
- VCI film wrap and rust-inhibitor oil protect machined surfaces for up to 12 months of storage or transit
- Individual foam, corrugated dividers or moulded PE cradles isolate parts from impact and abrasion
- Fumigation-free plywood cases certified to ISPM-15 accepted at every major port worldwide
- Barcode labels, part-number marking and customer-branded packaging (private label) available on request
- Loose, bulk, palletised or kitted assemblies — packed to your inbound receiving specification
Global shipping desk
- Incoterms 2020: FOB Shanghai / Ningbo / Qingdao standard, with EXW, CIF, CFR, DDP and DAP on request
- Air freight, sea LCL and FCL, and China–Europe rail coordinated in-house — no forwarder hand-offs
- Full export document set — Certificate of Origin (CO / Form A / FTA), packing list, commercial invoice, B/L and material test certificate
- Delivered to 40+ countries; established freight lanes to Germany, USA, Italy, Poland, Türkiye, Brazil, Mexico and Australia
- Real-time shipment tracking and consolidated container loading for multi-SKU orders
Datasheets and inspection templates
Answers before you ask
The questions our sales engineers hear most often. Missing something? Message us — a real engineer replies within one business day.
Variants engineered for every drive
Single-Groove V-Belt Pulley
One machined V-groove for single-belt drives in fractional to medium horsepower applications.
Learn moreMulti-Groove V-Belt Pulley
2 to 12 precisely spaced V-grooves for multi-belt drives that transmit higher torque without increasing pulley diameter.
Learn moreTaper Bore Pulley
Internal taper matched to a taper lock or QD bushing for easy installation, removal and shaft size flexibility.
Learn moreSplit Pulley
Two-piece pulley that assembles around an existing shaft without shaft disassembly — ideal for retrofit and repair.
Learn moreIdler Pulley
Free-spinning pulley with sealed ball bearing used on the slack side of a belt drive to maintain tension and wrap angle.
Learn moreWire Rope Sheave
Deep-grooved profile designed specifically for steel wire rope in lifting, hoisting and material handling.
Learn moreExplore adjacent product families
From the engineering desk
Industrial Materials — The Selection Guide
Match cast iron, carbon steel, alloy steel, stainless and nickel alloys to mechanical, corrosion and thermal duty.
ReadCNC Machining — A Buyer's Guide
3-axis vs 4- vs 5-axis, realistic tolerance envelopes, and how to write a drawing that quotes low.
ReadIndustrial Inspection Methods
CMM, spectrometer, hardness, NDT and balancing — what each proves and when to specify it.
ReadRequest a Quote
Send drawings, target quantities and material grade. Firm pricing back within one business day.
Download Catalogue
Complete range, material grades, dimensional envelope and load ratings — the working PDF our engineers use.
Contact Sales
Prefer a call? Book a slot with a sales engineer for spec review and lead-time planning.
Get pricing and lead time
Share drawings, materials and target quantities — a real engineer replies.
Ready to work with Force Machining?
Send drawings, specs or a rough idea — our engineers get back within one business day.